19957620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{139}}^1\times {\mathrm{2393}}^1$

素因数の和:2544

約数の個数: 48

約数和(自身を含む): 56306880

約数和(自身を除く): 36349260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 139, 278, 417, 556, 695, 834, 1390, 1668, 2085, 2393, 2780, 4170, 4786, 7179, 8340, 9572, 11965, 14358, 23930, 28716, 35895, 47860, 71790, 143580, 332627, 665254, 997881, 1330508, 1663135, 1995762, 3326270, 3991524, 4989405, 6652540, 9978810, 19957620]

約数ペア:

[(1, 19957620), (2, 9978810), (3, 6652540), (4, 4989405), (5, 3991524), (6, 3326270), (10, 1995762), (12, 1663135), (15, 1330508), (20, 997881), (30, 665254), (60, 332627), (139, 143580), (278, 71790), (417, 47860), (556, 35895), (695, 28716), (834, 23930), (1390, 14358), (1668, 11965), (2085, 9572), (2393, 8340), (2780, 7179), (4170, 4786)]